You know he's always put on the 2nd unit, with the players people are complaining about...right?
His PP numbers have slipped every year he's played in the NHL, and so has his ice time on the PP. Instead of putting a young player in a position where he'd be able to gain confidence and improve, he was taken off of the PP for pretty much no reason. He had two more points in '09 than Nielsen did, with 155 minutes vs Nielsen's 223 minutes. Then outscored him by 1 in '10 having played 10 less PP minutes. After that, his minutes dropped considerably so it's not possible to compare.